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March 31, 2008
TRANSTIG 200 Pi
SERVICE MANUAL
2.06 Functional Block Diagrams
Figure 2-2 illustrates the functional block diagram of the Transtig 200 Pi power source.
A
r
t # A-06029
To each control circuit
Main
Circuit
Switch
Filter
Input
Diode
Capacitor
DC Power
Primary
Voltage
Sensor
IGBT
Inverter
The
r
mal
Detector
Main
Transformers
(T1)
Output
Inductor
Output
Diodes
Transformer
(HCT1)
Hall Current
Lift Tig Mode
Output Short
Sensing
Circuit
Stick Mode
VRD
Sensing
Circuit
Thermal
Sensor
Circuit
Drive
Circuit
+/-12VDC +18VDC
+24VDC +5VDC
Trouble
Sensing
Circuit
Torch Control
Connection
(CON1)
Current
Adjustment
Circuit
Reference
Adjustment &
Mode select Switch
Panel Circuit Boa
r
d
Sequence
Control
Fan Control
Circuit
Fan
Input
Power
Primary
Circuit
Sensor
Gas Control
Circuit
Solenoid
Coupling
Coil
High
Frequency
Unit
HF Unit
Control
Circuit
Figure 2-2: Transtig 200 Pi Functional Block Diagram
2.07 Transporting Methods
These units are equipped with a handle for carrying purposes.
!
WARNING
ELECTRIC SHOCK can kill. DO NOT TOUCH live electrical parts. Disconnect input power conductors
from de-energized supply line before moving the welding power source.
!
WARNING
FALLING EQUIPMENT can cause serious personal injury and equipment damage.
Lift unit with handle on top of case.
Use handcart or similar device of adequate capacity.
If using a fork lift vehicle, place and secure unit on a proper skid before transporting.